Vaporproof mounting for receptacles



A ril 14, 1936. H. HUBBELL, JR 2,037,026

VAPORPROOF MOUNTING FOR HECEPTACLES I Filed Feb. 2, 1932 2 Sheets-Sheetl vAM/x A mM-Imvm! April 14, 1936. i H, HUBBELL, JR 2,037,026

- VAPORPROOF MOUNTING FOR REGEPTACLES Filed Feb. 2, 19:52 2Sheets-Sheet? Patented Apr. 14, i936 UNITED STATES PATENT OFFICEVAPORPROOF MOUNTING FOR RECEPTACLES 9 Claims.

This invention relates to new and useful improvements in mountings forelectric outlet receptacles and has particular relation to a vapor proofmounting for such receptacles.

The invention is particularly although not exclusively useful in rayonplants where trouble is experienced owing to the fact that fumes, asfrom the spinning bath, engage and corrode contacts. In pot type orcentrifugal spinning machines it is not uncommon to provide a separateelectric motor for each pot or spinning box and these motors are fedfrom bus bars usually extending the length of the machine frame andenclosed by a conduit or casing to protect them from fumes.

An object of the present invention is to provide an outlet receptacleand a vapor proof mounting therefor whereby the receptacle may be easilyand quickly mounted on a wall of a conduit enclosing the bus bars orwires, in a manner to prevent the entrance of fumes to the interior ofthe conduit and in a manner to fully protect the contacts of thereceptacle.

Other objects and advantages will become ap- 5 parent from aconsideration of the following detailed description taken in connectionwith the accompanying drawings wherein a satisfactory embodiment of theinvention is shown. However, it will be understood that the invention isnot lim- 3 ited to the details disclosed but includes all suchvariations and modifications as fall within the spirit ofthe inventionand the scope of the appended claims.

In the drawings:

Fig. 1 is a side elevational view showing a portion of a conduitfor'enclosing wires or bus bars and having the invention appliedthereto;

Fig. 2 is a transverse sectional ,view taken substantially along theline 2-2 of Fig. 1, a plug being shown in elevation and with partsbroken Fig. 3 is a detailed sectional view taken substantially at rightangles to Fig. 2;

Fig. 4 is an elevational view of a plug;

Fig. 5 is a top plan view of the receptacle removed, the end closuredisc being omitted;

Fig. 6 is a transverse sectional view taken substantially along the line6-6 of Fig. 5, the contacts being omitted and the disc being shown inplace in elevation;

Fig. 7 is a-bottom plan view of the receptacle;

Fig. 8 is ,a top plan view of the mounting ring or plate;

Fig. 9 is a view partly in side elevation and partly in section of themounting ring, the same being sectioned substantially along the line 9-9of Fi 8;

Fig. 1G is a 60 gasket; and

plan view of a portion of a sealing Fig. 11 is a plan view of the endclosure plate or disc of the receptacle.

Referring in detail to the drawings at i2 is generally indicated aconduit or casing enclosing bus bars or wires l3, three of which areshown. The conduit or casing i2 is built up of sections and one sectionl4 includes a portion l5 forming the top of the conduit and a portion 56forming a side wall of the conduit. A section l'l forms the bottom ofthe conduit while a section I8 forms the other side wall thereof. Thefree edge of the top wall i5 is downturned as at H! while the free edgesof the bottom M are downturned as at it and 211.

Side wall it of the casing or conduit i2 has its upper edge portiondisposed at the inner side of the flange i9 and is secured to saidflange as by screws 22, a gasket or vellumoid or other vapor proofmaterial 23 being interposed between the flange and the adjacent portionof the side Wall M. This gasket is not affected by the fumes surroundingthe spinning machine and serves to preventsuch fumes entering theconduit or casing. The lower edge portion of the wall I8 is secured tothe flange 20 as by screws 24 and a gasket 25 also of vellumoid or othervapor proof material is interposed at this joint and functions as doesthe gasket 23. At its lower edge portion the wall 86 is secured to theflange 2| by screws 26 and a gasket 27 corresponding to the gaskets 23and 25 before referred to is interposed.

From the foregoing description it will be seen that the wires or busbars I3 are fully enclosed and protected from attack by corrosive gasesin the vicinity of the spinning machine with winch they may beassociated. It will also be noted that the lower edges of the side wallsof the conduit and the lower edges of the flanges 20 and 2| are disposedbelow the main portion of the bottom wall I! and that any condensationforming on the conduit or any liquid accidentally spilled on the conduitwill drip from these low edges and will not follow along the walls ofthe housing and on to-the bottom wall ii. That is, the edges includingthe flanges 20 and M provide 'a drip point.

Secured to the lower or bottom wall I! of the conduit l2 are outletreceptacles generally designated 28, these receptacles being preferably.arranged at spaced points whereby they are disposed adjacent to therespective motors to which they are to be connected. Since thereceptacles are preferably all of the same construction a detaileddescription of but one will be given, and it will be noted that eachreceptacle includes a body 29 of insulating material and which body asshown is substantially circular in plan.

As perhaps best shown by Figs. 2 and 5 the body is' in its upper endslightly recessed centrally whereby it is provided with an annularrecesses or wells 3! for the reception of the end portions 32 ofcontacts 33. Each contact 33 includes a substantially L-shaped portionor extension 34 the short arm 35 of which is riveted or otherwisesecured to the portion 32 of the contact as at 36 (see Fig. 2). Theseshort arms 35 of the contact extensions span the recesses 3| and rest inslight depressions 31 provided in the body and about the recesses.

The long arms of the L-shaped extensions 34 project in a direction awayfrom the body and at their outer ends have portions 36 lanced andpressed therefrom and between which and the bodies of the extensions arereceived the ends of lead in wires 39 connected with the bus bars bysoldering or welding as at 46 and which are preferably soldered to thecontacts as at 4|.

The bottom wall I! of the conduit or casing 12 is provided with openings42 through which the extensions 34 of the contacts 33 may pass anddisposed against the inner surface of this Wall is a mounting plate orring 43 formed preferably of metal and provided with lugs 44 havingtapped openings 45 therethrough. Also, this mounting plate or ring isprovided with a pair of spaced preferably oppositely disposed downwardlyextending lugs or projections such as pins or studs 46. The wall I! ofthe conduit is provided with spaced openings through which the studs 46pass and these studs are of such length (see Fig. 3) as to pass entirelythrough the wall l1 and project below the same.

In its upper end body 29 of the receptacle is provided at spaced pointswith recesses 41 and these recesses are so relatively arranged that whenthe body is properly disposed against the conduit the studs 46 willenter the recesses 41 and bring the parts into alignment as will latermore fully appear. In assembling the contacts 33 in the body it is butnecessary to drop the contacts into place with their portions 32disposed in the recesses 3| and thereafter a disc 48 of insulatingmaterial is slipped over the extending arms of the contacts and intoposition within the annular shoulder 30 of the body.

To permit of this the disc 48 is provided with spaced openings 49through which the extensions of the contacts may pass and the disc isalso provided with a central opening 5|] adapted to align with anopening 5| through the body 29 and through which extends a relativelylong bolt 52 adapted to pass through the opening 50 of the disc and onthe upper end of which is disposed a nut 53 whereby the disc may besecured in place. It will be noted that the openings 49 through the discare shaped only topermit of the passage of the extensions 34 of thecontacts and that the disc will therefore overlie the short arms 35 andthe rivets 36 of the contacts and secure the contacts in place in thereceptacle or body.

Body 29 is also provided with spaced openings 54 and the disc 48 isprovided with correspondingly spaced openings 55 adapted to align withthe openings 54 when the disc is assembled on the body and through theseopenings are passed relatively long bolts 56, the said bolts being of alength to pass through the body 29, disc 48, wall ll of the conduit andthread into the tapped openings 35 in the lugs 44 of the ring 43. Topermit or this the wall ll is provided with openings spaced as are theopenings of the disc #38 and the openings 5% through the body Further,tapped openings 35 are spaced to align. with the acct/pee openingsthrough the wall when the lugs 46 of the ring are in position extendingthrough their openings in the wall ll,

Also, the relationship between these various parts is such that when thering 33 is disposed against the inner surface of the wall l! with thestuds 43 of said ring extending through the wall the openings 45 of thering will be so disposed as to align with the proper openings throughwalls ll and with the screws 56 when the body 29 of the receptacle is sodisposed that the studs 46 enter the recesses 4? in the body of thereceptacle. Therefore, it will be seen that when the body 29 is disposedagainst the wall 37 with the studs 46 entering the recesses 4'1 in thebody it will be but necessary to thread the screws 56 into the openings45 inorder to securely attach the receptacle to the conduit. Thisgreatly facilitates mounting of the receptacle and decreases the timerequired.

In order that the disc 48 will not in any way block the entrance of thestuds 46 into the recesses 41 the said disc may be notched at oppositepoints as at 51. Further, in order that the screws 56 will not drop outof the openings 54 before they are threaded to the plate 43 and whilethe receptacle is being held vertical each screw may at some point inits length, as for example at a point immediately below the disc 48, bethreaded through a small fiber washer 58 of such diameter as not to passthrough the opening 54. It will be understood that these washers 58 aredisposed im.

relatively small recesses 59 representing slight enlargements of theopenings 54 at some point along the length of said openings and thatwhile "the screws may easily be threaded through the washers they willnot fall out of the washers and the washers will hold the screws inplace while parts are being brought into proper alignment and before thescrews are threaded home.

A fiber gasket 60 may be disposed on the annular shoulder 30 of the bodyso as to be clamped between the body and the outer surface of the wallI1 and this gasket is provided with openings 6| through which the studs46 may pass and the gasket is of such thickness as to completely sealthe space between the receptacle and the wall of the conduit and it willfurther be noted that the gasket is of such internal diameter that allconnections between the receptacle and the conduit are within the gasketso that the parts are efi'ectively protected from the fumes.

Through its lower end the body 28 is provided with openings 62 for theentrance of contacts, as for example the contact blades 63 of a plug 64from which leads a cable 65, as for example to the motor of a spinningpot. Also, at its lower or outer end the body 29 is recessed as at 66whereby an annular shoulder 61 is formed and the diameter of the recess66 is such that (see Fig. 2) the body of the plug 64 may enter into therecess whereby the two insulating bodies may directly engage when theblades 63 are plugged in. The shoulder 61 surrounding the recess 66 willalso form a drip point to prevent condensation moving along the bottomwall of the body and into the entrances 62 to the recesses and contacts.

From the foregoing description tairen in connection with the drawings itwill be seen that the present invention provides a mounting for areceptacle whereby the receptacle 2 and quickly secured to a conduit orcasing and in a manner to prevent entrance-2.01" vapors or gases to theinterior of the conduit through the be easily P to its use in connectionwith artificial silk spinning machines that it is not limited to use inconnection with such machines but may be used and will be found usefulin any connection where it is desirable to prevent the entrance of fumesor gases to the interior of a housing or conduit containing bus bars.

Having thus set forth the nature of my invention, what I claim is:

1. In a mounting for an outlet receptacle, in combination, a conduitenclosing conductors, a receptacle, means to mount the receptacle on theconduit with the contacts of the receptacle electrically connnected withthe conductors, said means including a plate disposed against the innersurface of a wall of said conduit, said receptacle of a diameter lessthan the width of said wall of the conduit, and means passing throughthe receptacle and said wall of the conduit and into said plate to drawthe edges of the receptacle against the outer surface of said wall ofthe conduit.

2. In combination with aconduit enclosing a conductor, said conduithaving an opening in a wall thereof, a member within said conduit anddisposed against said wall thereof, a receptacle having a contacttherein, said receptacle having a knife blade opening through one endthereof to said contact, a gasket on the other end of the receptacle,means passing through said wall of the conduit and engaging said memberto draw the receptacle toward said wall and press the gasket thereagainst about the opening whereby the opening is sealed by the gasketand receptacle, and a connection through said opening from the conductorto the contact in the receptacle.

3. In combination with a conduit enclosing a conductor, said conduithaving an opening in a wall thereof, a receptacle of a diameter lessthan the width of said wall and having a continuous shoulder, a memberwithin said conduit, said receptacle having a contact therein, saidreceptacle having a knife blade entrance opening through one end thereofto the contact, means passing through said receptacle from its outer endand through said wall and into said member to draw the continuousshoulder of the receptacle against said wall about the opening in amanner to seal said opening, and a connection through said opening fromthe conductor to the contact in the receptacle.

4. In combination with a conduit including top, side and bottom wallsand enclosing a conductor, said conduit having an opening through itsbottom wall and having the lower edges of its side walls disposed belowits bottom wall, a receptacle including a body of insulating material,said receptacle of a diameter less than the width of said bottomwall ofthe conduit, a member within said conduit and disposed against thebottom wall thereof, said receptacle having a contact therein, saidreceptacle having an entrance opening through its lower end to saidcontact, bolts passing-through said receptacle from its lower end andthrough said bottom wall and into said member to draw the receptacleagainst the wall conduit having an opening through its bottom wall, areceptacle including a body of insulating material, a member within saidconduit and disposed against the bottom wall thereof, said receptaclehaving a contact therein, said receptacle having an entrance openingthrough its lower end to said contact, a bolt passing through saidreceptacle from its lower end and through said wall and into said memberto draw the receptacle against the wall and about the opening in amanner to seal the same, means on said bolt within the body of thereceptacle and serving prior to the passing of the bolt into said memberto prevent the bolt from falling out of the body, and a v connectionthrough said opening from the conductor to the contact.

6. In combination with a conduit enclosing a conductor, said conduithaving an opening in a wall thereof, a receptacle including a body ofinsulating material, a plate within said conduit and disposed againstsaid wall thereof and about said opening, said receptacle having acontact therein and an entrance opening through one end to said contact,means passing through said receptacle and said wall and into said plateto draw the receptacle against the wall and about the opening in amanner to seal the opening, a connection through said opening from theconductor to the contact, said plate having a pair of spaced studsextending through said wall of the conduit, and said body having a pairof spaced recesses to receive said studs whereby to align the attachingmeans with the openings in the wall and plate.

7. In a receptacle, a body, contacts in said body and includingextensions projecting from one end of the body, knife blade inletopenings to said contacts from the other end of the body, a plate ofinsulating material disposed against the first mentioned end of saidbody and having openings through which said extensions pass, said platesecuring the contacts in the body, and means securing the plate to thebody.

8. In combination with a conduit including top and bottom walls andenclosing a conductor, said conduit having an opening in its bottomwall, a receptacle including a body of insulating material having acontact therein, means to secure said receptacle to the conduit with oneend of the receptacle engaging the bottom wall of the conduit about saidopening in a manner to seal the same, a connection between the conductorand contact, said receptacle having an entrance opening through itslower end wall and leading to said contact, and said receptacle havingits lower end recesses whereby to provide an annular shoulder about andspaced from said entrance opening.

9. In combination with a conduit enclosing conductors, a plate insidethe conduit, a receptacle having contacts electrically connected withthe conductors, a plurality of securing screws in the receptacle passingthrough a wall of the conduit and threaded into the plate to secure thereceptacle to the outside of the conduit, and a sealing gasket betweenthe receptacle and the conduit wall embracing the securing means and theelectrical connections from the receptacle to HARVEY HUBBELL, JR.

